//
// (C) Copyright 2006 by Autodesk, Inc. 
//
// Permission to use, copy, modify, and distribute this software in
// object code form for any purpose and without fee is hereby granted, 
// provided that the above copyright notice appears in all copies and 
// that both that copyright notice and the limited warranty and
// restricted rights notice below appear in all supporting 
// documentation.
//
// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS. 
// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE.  AUTODESK, INC. 
// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
// UNINTERRUPTED OR ERROR FREE.
//
// Use, duplication, or disclosure by the U.S. Government is subject to 
// restrictions set forth in FAR 52.227-19 (Commercial Computer
// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
// (Rights in Technical Data and Computer Software), as applicable.
//

using System;
using System.Collections;
using System.Windows.Forms;

namespace MgdDbg.Snoop.Data
{
	/// <summary>
	/// Snoop.Data class to hold and format an Enumerable value.  This class can be used
	/// for any object that supports the IEnumerable interface.  However, some classes,
	/// such as a Map, are better seen visually in Key/Value pairs vs a straight list of 
	/// enumerated objects.  Use this when it works well, but write your own Snoop.Data object
	/// for Enumerable cases that need better feedback to the user.
	/// </summary>
	
	public class Enumerable : Data
	{
	    protected IEnumerable	m_val;
		protected ArrayList		m_objs = new ArrayList();
	    
		public
		Enumerable(string label, IEnumerable val)
		:   base(label)
		{
		    m_val = val;

				// iterate over the collection and put them in an ArrayList so we can pass on
				// to our Form
			if (m_val != null) {
				IEnumerator iter = m_val.GetEnumerator();
				while (iter.MoveNext())
					m_objs.Add(iter.Current);
			}
		}
		
        public override string
        StrValue()
        {
			return Snoop.Utils.ObjToTypeStr(m_val);
        }
        
        public override bool
        HasDrillDown
        {
            get {
                if ((m_val == null) || (m_objs.Count == 0))
                    return false;
                else
                    return true;
            }
        }
        
        public override void
        DrillDown()
        {
			if ((m_val != null) && (m_objs.Count != 0)) {
				Snoop.Forms.Objects form = new Snoop.Forms.Objects(m_objs);
				form.ShowDialog();
			}
        }
	}
}
